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A method and system for treating waste rubber based on adding alkali

A technology of alkali treatment and lye solution, applied in sustainable manufacturing/processing, rayon recycling, final product manufacturing, etc., can solve the problems of unfavorable environmental protection and high cost, and achieve the effect of increasing the amount of recycling, reducing operating costs, and reducing manpower

Active Publication Date: 2021-10-22
唐山三友远达纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current method for treating waste rubber is costly and not conducive to environmental protection. In order to solve this technical problem, a method and system for treating waste rubber based on adding alkali are provided

Method used

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  • A method and system for treating waste rubber based on adding alkali
  • A method and system for treating waste rubber based on adding alkali
  • A method and system for treating waste rubber based on adding alkali

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A kind of method of processing waste rubber based on adding alkali of the present embodiment specifically comprises the following steps:

[0038] S1, input the waste glue into the waste glue tank 3 through the lye delivery pipeline and stir to obtain the self-assembled dispersion Ⅰ. Fiber blocks, short fibers and flocs of different lengths can be seen under the microscope, and the glue is turbid;

[0039] S2, adding high-concentration lye to the self-assembly dispersion I and stirring to obtain the self-assembly dispersion II, observing under a microscope that the fiber blocks, short fibers of different lengths and flocs dissolve rapidly, and the glue is clear; figure 2 as shown, figure 2 It is the breaking condition of cellulose under high-concentration lye (above 140g / L); image 3 It is the condition of cellulose breakage under low concentration of lye (below 140g / L). Compared figure 2 and image 3 It can be seen that the use of high-concentration lye can make ...

specific Embodiment approach 1

[0046] A method for treating waste rubber based on adding alkali, comprising the following steps:

[0047] S1, input the waste rubber into the waste rubber tank and stir, the stirring speed is 20rmp, and the stirring time is 15min, to obtain the self-assembly dispersion I;

[0048] S2, adding a sodium hydroxide solution with a concentration of 450g / L to the self-assembly dispersion I and stirring, the stirring speed is 20rmp, and the stirring time is 15min to obtain the self-assembly dispersion II; the self-assembly dispersion The concentration of II is 140g / L. The volume ratio of the self-assembly dispersion I to the lye is 3:0.8.

[0049] S3, filtering the self-assembly dispersion II.

specific Embodiment approach 2

[0051] A method for treating waste rubber based on adding alkali, comprising the following steps:

[0052] S1, input the waste rubber into the waste rubber tank and stir, the stirring speed is 22rmp, and the stirring time is 20min, to obtain the self-assembly dispersion I;

[0053] S2, adding a sodium hydroxide solution with a concentration of 430g / L to the self-assembly dispersion I and stirring, the stirring speed is 22rmp, and the stirring time is 20min to obtain the self-assembly dispersion II; the self-assembly dispersion The concentration of II is 150g / L. The volume ratio of the self-assembly dispersion I to the lye is 3:0.9.

[0054] S3, filtering the self-assembly dispersion II.

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Abstract

The present invention relates to a method and system for treating waste rubber based on adding alkali. The method includes the following steps: S1, inputting waste rubber into a waste rubber tank through an alkali liquid delivery pipeline and stirring to obtain self-assembly dispersion I; S2, Adding high-concentration lye to the self-assembly dispersion I and stirring to obtain self-assembly dispersion II; S3, filtering the self-assembly dispersion II. The method of the present invention uses high-concentration lye to dissolve the self-assembly dispersion I, which not only reduces the consumption of manpower, water, materials, etc., but also reduces COD efflux, and what is more valuable is that it increases the recovery of waste rubber. It has good theoretical research value and industrial application prospect.

Description

technical field [0001] The invention relates to the related technical field of waste rubber treatment, in particular to a method and system for treating waste rubber based on adding alkali. Background technique [0002] At present, in the viscose preparation process of domestic viscose staple fiber production enterprises, the treatment of waste rubber has always been a key and difficult point. The traditional waste glue treatment uses a plate and frame filter press to filter the waste glue and then recycle part of the glue. When using a plate and frame filter press to process waste rubber, it is mainly to use polypropylene felt as a filter material to remove the unyellowing alkali cellulose in the viscose. During use, due to the working principle of the plate and frame filter press , when the working pressure reaches 5-6bar, and the filtration volume is small, it is necessary to disassemble and replace the filter cloth of the plate-frame filter. The disassembly and assembly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F13/02
CPCD01F13/02Y02P70/62
Inventor 郑柏山刘勇郑晓晨李铭远徐瑞宾张荣生王永善张伟李忠生宋杰郑金生刘岩李立刚卢方王太双张卫民岳春艳李永超何宏丽王秋艳王兴超王宝伟祁保国李军李凤武张小伟刘春华刘海军陈飞王啸臣
Owner 唐山三友远达纤维有限公司
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